Recent content by pj9999

Thank you for the replies. The subject I want to discuss with the engineers is the permeability of liners for contaminated land. I understand these numbers I quoted are the coefficient of hydraulic conductivity. As an example of the documents I have been looking at please see here...

Can someone please advise a non-engineer on the correct way to talk about permeability with engineers. ie how do you say: 1 x 10-7 secs/cm or 5 x 10-10 secs/cm. Is it "one by ten seven", "five by ten ten"?